Modeling subdivided pipes
you want the pipe to branch off into the many pipes? I would try Boolean (union) a cluster of solid pipes (I used subdivided cubes) . Make sure the verts are aligned before you union. Delete the unwanted faces  then select the verts on one end and use the circle command to round them out. extrude then use the spin tool to add the elbow. apply subdivide to taste.
steps from right to left.